CN111721696A - Underground soil body effective pressure testing device and testing method - Google Patents
Underground soil body effective pressure testing device and testing method Download PDFInfo
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- CN111721696A CN111721696A CN202010396886.1A CN202010396886A CN111721696A CN 111721696 A CN111721696 A CN 111721696A CN 202010396886 A CN202010396886 A CN 202010396886A CN 111721696 A CN111721696 A CN 111721696A
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- 239000002689 soil Substances 0.000 title claims abstract description 32
- 238000012360 testing method Methods 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000011148 porous material Substances 0.000 claims abstract description 35
- 239000002184 metal Substances 0.000 claims description 21
- 230000001154 acute effect Effects 0.000 claims description 6
- 238000003491 array Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000009530 blood pressure measurement Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000013480 data collection Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/088—Investigating volume, surface area, size or distribution of pores; Porosimetry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Pathology (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Dispersion Chemistry (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses an effective pressure testing device for an underground soil body, which comprises a hard measuring tube, wherein a transverse pressure measuring groove is formed in the inner wall of the hard measuring tube, an elastic diaphragm is arranged in the transverse pressure measuring groove, a horizontal pressure tester is arranged at the transverse pressure measuring groove, a testing end of the horizontal pressure tester is abutted against the inner side of the diaphragm, a pore water pressure tester is arranged on the inner wall of the tube close to the lower part of the horizontal pressure tester, and the pore water pressure tester and the horizontal pressure tester are connected with an upper data collecting and calculating device. The invention also discloses an effective pressure testing method of the underground soil body implemented by adopting the effective pressure testing device of the underground soil body. The testing device and the testing method can quickly and accurately obtain the effective lateral pressure value of the underground soil body, and can provide data support for later-stage design and construction.
Description
Background
The horizontal pressure tester and the pore water pressure tester are often required to be used step by step in the test of the effective pressure of the underground soil body, so that horizontal transverse pressure data and pore water pressure data cannot be obtained in the same place in the deep part of the underground soil body, the effective pressure data is not accurate enough, and the horizontal pressure tester and the pore water pressure tester are easily damaged in the using process.
Disclosure of Invention
The invention aims to provide an effective pressure testing device for an underground soil body, which can quickly and accurately obtain an effective lateral pressure value of the underground soil body. The technical problem to be solved by the invention is also to provide an effective pressure testing method of the underground soil body, which is implemented by adopting the effective pressure testing device of the underground soil body.
Therefore, the effective pressure testing device of the underground soil body provided by the invention comprises a hard measuring pipe and is characterized in that: the inner wall of the pipe of the hard measuring pipe is provided with a transverse pressure measuring groove, the transverse pressure measuring groove is provided with an elastic diaphragm, a horizontal pressure tester is arranged at the position of the transverse pressure measuring groove, a testing end of the horizontal pressure tester is abutted against the inner side of the diaphragm, a pore water pressure tester is arranged on the inner wall of the pipe close to the lower part of the horizontal pressure tester, and the pore water pressure tester and the horizontal pressure tester are connected with a data collecting and calculating device above.
Furthermore, a small water inlet hole is formed in the pipe wall below the pore water pressure tester.
Furthermore, the measuring tube is marked with depth scales.
Furthermore, a first wireless signal transceiver is arranged on each of the pore water pressure tester and the horizontal pressure tester, and a second wireless signal transceiver matched with the first wireless signal transceiver is arranged on each of the data collecting and calculating device so as to realize data and signal transmission.
Further, the pore water pressure tester and the horizontal pressure tester are connected with the data collecting and calculating device above through leads.
Furthermore, survey buret front end cover and connect the metal end, the metal end has the slot that the opening faces up, the metal end has most advanced down, horizontal pressure measurement groove and elastic diaphragm all are in under surveying buret tip, survey buret insert the slot back to the end elastic diaphragm quilt the slot lateral wall shields.
Further, have the internal thread on the lateral wall of slot bottom, survey the buret lower tip outside and have the external screw thread, survey the buret and insert slot bottom and rather than forming threaded connection, tip department utensil outside has a plurality of ribs, and rib outside two sides forms the acute angle, and the rib inwards inclines gradually along the tip.
Further, have L shape card strip on the lateral wall of slot bottom, form the bayonet socket between L shape card strip and the slot bottom, survey the tip outside of portion have with the fixture block that the bayonet socket matches under the buret, survey the buret and insert the slot bottom and the fixture block card is gone into in the bayonet socket, tip department utensil outside has a plurality of edges, and the edge outside both sides form the acute angle, and the edges incline inwards gradually along most advanced.
The invention provides an effective pressure test method of an underground soil body implemented by adopting the effective pressure test device of the underground soil body, which comprises the following steps:
1) arranging the measuring pipe with the metal end into a soil body, reversely rotating the measuring pipe after the measuring pipe reaches a preset position to enable the lower end part of the measuring pipe to be separated from the connection with the metal end, and then drawing up the measuring pipe to enable the lower end port of the measuring pipe and the elastic diaphragm to be separated from the slot;
2) standing for at least 24 hours, reading the horizontal pressure data and the pore water pressure data value, and subtracting the pore water pressure data value from the horizontal pressure data value to obtain an intermediate effective pressure data value;
3) and measuring for multiple times at intervals to obtain the effective pressure data values of corresponding secondary arrays, and if the previous and next data values are unchanged, determining the effective pressure data values of the unchanged arrays as final effective pressure data values.
The invention provides the following technical effects:
1) the horizontal pressure measurement groove with the elastic diaphragm is arranged in the measuring pipe, when the horizontal pressure measurement groove is inserted into a soil body, the surrounding soil pressure can be transmitted to the horizontal pressure tester inside the measuring pipe through the elastic diaphragm, so that a horizontal pressure value is obtained, the pore water pressure tester below the horizontal pressure tester can obtain a pore water pressure value, the horizontal pressure value of the soil body can be offset by the pore water pressure, and an effective pressure value can be obtained by subtracting the pore water pressure value from the horizontal pressure value.
2) According to the invention, the horizontal pressure tester and the pore water pressure tester are integrated and placed in the measuring tube, so that the soil body can be conveniently and quickly arranged at one time, and the measuring mode is more convenient and quicker.
3) The test tube adopts metal end rather than cup jointing to shield elastic diaphragm, avoid elastic diaphragm and the pore water pressure tester of tip down to receive the extrusion damage at the in-process of beating and establishing, and can also make test tube and metal end break away from through rotating the dropout and carry out effective pressure measurement.
Drawings
Fig. 1 is a schematic structural diagram of the device for testing effective pressure of an underground soil body provided by the invention, wherein a metal end head is sleeved with a measuring pipe in the state.
Fig. 2 is a schematic cross-sectional view of the metal end of fig. 1.
Fig. 3 is a schematic structural diagram of the effective pressure testing device of the underground soil in fig. 1, wherein the metal end and the measuring pipe are separated in a tripping mode.
Fig. 4 is a schematic structural relationship diagram of the L-shaped clamping strip and the clamping block.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Referring to fig. 1 to 4, an effective pressure testing apparatus for an underground soil mass provided in embodiment 1 of the present invention includes a hard measuring tube 1, a transverse pressure measuring groove 2 is formed on an inner wall of the hard measuring tube 1, the transverse pressure measuring groove 2 is provided with an elastic diaphragm 3, a horizontal pressure tester 4 is disposed at the transverse pressure measuring groove 2, the horizontal pressure tester 4 measures an effective lateral confining pressure, a testing end of the horizontal pressure tester 4 abuts against an inner side of the diaphragm 3, a pore water pressure tester 5 is disposed on an inner wall of the tube adjacent to a lower side of the horizontal pressure tester 4, the pore water pressure tester 5 and the horizontal pressure tester 4 are connected to a data collecting and calculating apparatus 6 above the pore water pressure tester 5 and the horizontal pressure tester 4, the data collecting and calculating apparatus 6 is a computer, and the connection mode is as follows: the pore water pressure tester 5 and the horizontal pressure tester 4 are both provided with a first wireless signal transceiver, the data collecting and calculating device 6 is both provided with a second wireless signal transceiver matched with the first wireless signal transceiver to realize the transmission of data and signals, or the pore water pressure tester 5 and the horizontal pressure tester 4 can also be connected with the data collecting and calculating device 6 above the pore water pressure tester 5 and the horizontal pressure tester 4 through leads. Referring to fig. 1, in order to read the depth data of the insertion of the rigid measuring tube 1 and further obtain the measuring depth position of the horizontal pressure tester, the rigid measuring tube 1 is marked with a depth scale. In the above embodiments, the horizontal pressure tester 4, the pore water pressure tester 5, the data collecting and calculating device 6, the first wireless signal transceiver and the second wireless signal transceiver, and the internal structures and functions thereof all belong to the scope of the prior art, and are not described herein again.
Referring to fig. 1-4, in order to facilitate drilling into the deep part of the soil body and protect the elastic diaphragm 3 and the pore water pressure tester 5 during the drilling process, the front end of the hard measuring tube 1 is sleeved with a metal end 7, the metal end 7 is provided with a slot 8 with an upward opening, the metal end 7 is provided with a tip 9 downward, the transverse pressure measuring tank 2 and the elastic diaphragm 3 are both arranged at the lower end part of the hard measuring tube 1, and the elastic diaphragm 3 is shielded by the side wall of the slot 8 after the hard measuring tube 1 is inserted into the slot 8 to the bottom. Have internal thread 10 on the lateral wall of slot 8 bottom, the stereoplasm is surveyed the tip outside and is had external screw thread 11 under 1, the stereoplasm is surveyed the pipe and is inserted slot 8 bottom and form threaded connection with it, 9 punishment outsides in pointed end have a plurality of ribs 12, and rib 12 outside two sides form the acute angle, and rib 12 inwards inclines gradually along most advanced.
Referring to fig. 1, 3 and 4, an embodiment 2 of the present invention is substantially the same as the embodiment 1, and the difference is only in the clamping structure of the hard measurement pipe 1 and the metal end 7, specifically: stereoplasm survey buret 1 and metal end 7 have L shape card strip 13 on the lateral wall of slot 8 bottom, form bayonet socket 14 between L shape card strip 13 and the slot 8 bottom, the stereoplasm survey buret 1 lower tip outside have with the fixture block 15 that bayonet socket 14 matches, stereoplasm survey buret 1 inserts slot 8 bottom and fixture block 15 card is gone into in the bayonet socket 14, 9 punishment in pointed end outsides have a plurality of ribs 12, and 12 outside two sides of rib form the acute angle, and rib 12 is along most advanced gradually leanin.
The invention provides an effective pressure test method of an underground soil body, which is implemented by the effective pressure test device of the underground soil body of the embodiment 1, and the method comprises the following steps:
1) the method comprises the following steps of (1) driving a hard measuring pipe 1 with a metal end 7 into a soil body, reversely rotating the hard measuring pipe 1 after reaching a preset position to enable the lower end part of the hard measuring pipe 1 to be separated from the connection with the metal end 7, and then upwards pulling up the hard measuring pipe 1 to enable the lower end port of the hard measuring pipe 1 and an elastic diaphragm 3 to be separated from a slot 8;
2) standing for at least 24 hours, reading the horizontal pressure data and the pore water pressure data value, and subtracting the pore water pressure data value from the horizontal pressure data value to obtain an intermediate effective pressure data value;
3) and measuring for multiple times at intervals to obtain the effective pressure data values of corresponding secondary arrays, and if the previous and next data values are unchanged, determining the effective pressure data values of the unchanged arrays as final effective pressure data values.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (9)
1. The utility model provides an effective pressure test device of underground soil body, includes stereoplasm survey buret, characterized by: the inner wall of the pipe of the hard measuring pipe is provided with a transverse pressure measuring groove, the transverse pressure measuring groove is provided with an elastic diaphragm, a horizontal pressure tester is arranged at the position of the transverse pressure measuring groove, a testing end of the horizontal pressure tester is abutted against the inner side of the diaphragm, a pore water pressure tester is arranged on the inner wall of the pipe close to the lower part of the horizontal pressure tester, and the pore water pressure tester and the horizontal pressure tester are connected with a data collecting and calculating device above.
2. The apparatus of claim 1, wherein the apparatus is configured to: and a small water inlet hole is formed in the pipe wall below the pore water pressure tester.
3. The apparatus of claim 1, wherein the apparatus is configured to: the hard measuring tube is marked with depth scales.
4. The apparatus of claim 1, wherein the apparatus is configured to: and the data collecting and calculating device is provided with a second wireless signal transceiving device matched with the first wireless signal transceiving device so as to realize the transmission of data and signals.
5. The apparatus of claim 1, wherein the apparatus is configured to: the pore water pressure tester and the horizontal pressure tester are connected with the data collection and calculation device above the pore water pressure tester and the horizontal pressure tester through leads.
6. An underground soil body effective pressure test device according to claim 1 or 2 or 3 or 4 or 5, wherein: the utility model discloses a stereoplasm measuring pipe, including stereoplasm survey buret front end cover, metal end has the slot that the opening faces up, metal end has most advanced down, horizontal pressure measurement groove and elastic diaphragm all are in the lower tip of stereoplasm survey buret, the stereoplasm is surveyed the buret and is inserted the slot back on end the elastic diaphragm quilt the slot lateral wall is shielded.
7. The apparatus of claim 6, wherein the apparatus is configured to: have the internal thread on the slot bottom lateral wall, the stereoplasm is surveyed the tip outside of buret and is had the external screw thread, the stereoplasm is surveyed the buret and is inserted slot bottom and rather than forming threaded connection, tip department utensil outside has a plurality of ribs, and rib outside both sides form the acute angle, and the rib inwards inclines gradually along the pointed end.
8. The apparatus of claim 6, wherein the apparatus is configured to: have L shape card strip on the lateral wall of slot bottom, form the bayonet socket between L shape card strip and the slot bottom, the stereoplasm survey the tip outside of buret lower tip have with the fixture block that the bayonet socket matches, the stereoplasm is surveyed the buret and is inserted the slot bottom and the fixture block card is gone into in the bayonet socket, tip department utensil outside has a plurality of edges, and the edge outside two sides forms the acute angle, and the edges is along most advanced gradually leanin.
9. An effective pressure testing method of an underground soil body, which is implemented by using the effective pressure testing device of an underground soil body according to claim 7, is characterized in that: the method comprises the following steps:
1) arranging a hard measuring tube with a metal end in a soil body, reversely rotating the hard measuring tube after the hard measuring tube reaches a preset position to separate the lower end part of the hard measuring tube from being connected with the metal end, and then pulling up the hard measuring tube to separate the lower end port of the hard measuring tube and the elastic diaphragm from the slot;
2) standing for at least 24 hours, reading the horizontal pressure data and the pore water pressure data value, and subtracting the pore water pressure data value from the horizontal pressure data value to obtain an intermediate effective pressure data value;
3) and measuring for multiple times at intervals to obtain the effective pressure data values of corresponding secondary arrays, and if the previous and next data values are unchanged, determining the effective pressure data values of the unchanged arrays as final effective pressure data values.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010396886.1A CN111721696A (en) | 2020-05-12 | 2020-05-12 | Underground soil body effective pressure testing device and testing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010396886.1A CN111721696A (en) | 2020-05-12 | 2020-05-12 | Underground soil body effective pressure testing device and testing method |
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| CN111721696A true CN111721696A (en) | 2020-09-29 |
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| CN202010396886.1A Pending CN111721696A (en) | 2020-05-12 | 2020-05-12 | Underground soil body effective pressure testing device and testing method |
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Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1527048A (en) * | 1975-05-30 | 1978-10-04 | Torstensson B | Method and device for determining the pore water pressure in a soil |
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2020
- 2020-05-12 CN CN202010396886.1A patent/CN111721696A/en active Pending
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Application publication date: 20200929 |